S
M
T
W
T
F
S
26
62°
33°
27
63°
35°
28
62°
36°
29
63°
36°
30
64°
37°
1
64°
38°
2
63°
37°
3
62°
35°
4
62°
38°
5
65°
39°
6
66°
39°
7
67°
40°
8
67°
40°
9
66°
39°
10
67°
40°
11
67°
40°
12
66°
38°
13
65°
37°
14
63°
37°
15
70°
39°
16
71°
38°
17
71°
38°
18
70°
36°
19
71°
34°
20
68°
36°
21
67°
37°
22
70°
40°
23
73°
40°
24
75°
37°
25
73°
35°
26
68°
35°
27
66°
37°
28
67°
37°
29
67°
34°
30
68°
38°
31
70°
43°
1
75°
44°
2
78°
45°
3
78°
47°
4
79°
44°
5
79°
45°
6
77°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Big Bear
Big Bear's May 2026 forecast shows daily high temperatures ranging from 62° to 79°, with overnight lows between 33° and 47°. The average high for May is 68° with an average low of 39°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Big Bear. See also: June | July | August.